| 改变相比/顶空气相色谱法测定饮用水中的氯仿及其分配常数 |
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| 引用本文： | 王永华. 改变相比/顶空气相色谱法测定饮用水中的氯仿及其分配常数[J]. 分析化学, 2002, 30(1): 53-55 |
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| 作者姓名： | 王永华 |
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| 作者单位： | 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京,100871 |
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| 摘 要： | 推导了改变气液相比／顶空气相色谱法的基本关系式。测定了20℃时氯仿在纯水中的液气分配常数为8．04，与文献值一致，测定标准水样品的浓度是97．83μg/L，相对误差0．68％，实测在实验室旋转一周的氯化消毒饮用水中氯仿含量为119．62μg/L，实验方法是测定3个具有不同相比的顶空浓度，然后通过回归分析建立的线性方程来计算。
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| 关 键 词： | 氯仿 静态顶空气相色谱 分配常数 气液相比 饮用水 测定 |
Detemination of Chloroform and Partition Coefficient in Drinking Water Using Static Headspace Gas Chromatography |
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| Wang Yonghua. Detemination of Chloroform and Partition Coefficient in Drinking Water Using Static Headspace Gas Chromatography[J]. Chinese Journal of Analytical Chemistry, 2002, 30(1): 53-55 |
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| Authors: | Wang Yonghua |
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| Abstract: | A new, accurate, and simple method has been developed to determine dimensionless partition coefficient and concentration of chloroform in drinking water using the static headspace gas chromatography. By using three different gas-liquid volume ratios in the headspace vials to create different equilibrium concentration in the gas phase, the partition coefficient and concentration of chloroform in drinking water were determined by regression analysis of a headspace system equation derived from mass balance principle. The results were compared with the literature data. |
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| Keywords: | Static headspace gas chromatography chloroform partition coefficient |
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